Machine for making tubs



(No Model.) 2 SheetsSheet 1. M. GOROORAN & 0. M. GATES.

. MAGHINE FOR MAKING TUBS.

N0. 317,5l6. Patent-ed May 12, 18-85.

2 SheetsSheet 2. .M. UORGORAN & G. M. GATES.

(No Model.)

MACHINE FOR MAKING .TUBS.

Patented May 12', 1885.

' a ra mr. Washin ton. DC.

UNITED STATES PATENT OFFICE.

MATHEW GORCORAN AND CHARLES M. GATES, OF ROCK FALLS, ILLINOIS.

MACHINE FOR MAKING TUI BS.

SPECIFICATION forming part of Letters Patent No. 317,516, datedMay 12,1885. Application filedMarch 6, 1885. (No model.) 7

To all whom it may concern:

Be it known that we, MATHEW GORCORAN and OHARLEs M. GATES, citizens ofthe United States, residing at Rock Falls, in the county of Whitesideand State of Illinois, have invented certain new and useful ImprovementsinMachinesforMaking Tubs; and we dohereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to lettersor figures of reference marked thereon,,which form a part of thisspecification.

Our invention pertains to machines for making tubs, particularlybutter-tubs, and has special reference to certain novel mechanism forstraightening and finishing the ends of such tubs.

In the drawings, Figure 1 is a side elevation, partly in section, of amachine embodying our invention. Fig. 2 is a cross-section in the line00 a: of Fig. l, and exhibits the mechanism for finishing the mouth ortop of the tub. Fig. 3 shows the inner face of the movable lever, towhich are attached the knives for finishing the lower end of the tub,preparatory to the insertion of the bottom. Fig. 4 shows such levermoved aside to permit the removal of the tub and the placing of itssuccessor. Fig. 5 is a plan of the movable seat G of the carriage G.

The machine is'intended to receive the tub after the latter is set up intruss-hoops, and level both ends of the tub, chamfer the inside andsmooth the outside of the upper end, smooth and chamfer the inside ofthe bottom, and cut an annular groove on the inner surface of the sides,near the lower end of the staves, to receive and hold the bottom of thetub in place. This is accomplished by the necessary number and locationof knives, hereinafter described, which operate on the tub as the latteris rotated laterally.

A is the frame of the machine, upon which is suitably journaled thehorizontal shaft B.

O is a pulley fixed on the shaft B, by which the latter is driven bymeans of the belt 0.

D is an idle-pulley seated loosely on the shaft B, and designed to carrythe belt 0 when the shaft B is at rest.

E is a chuck of the size and shape required to fit theinside of the tub,and which is screwed or otherwise suitably fastened on the outer end ofthe shaft B.

F is the tub in position for operation, and which at that time consistsmerely of its staves, held in place by the temporary or truss hoops a.The tapering form of the chuck E wedges into the tub when the latterisplaced thereon with its mouth or top inward, and the rotation of theshaft B imparts a rotary movement to both the chuck and tub.

G is a short lever pivoted at its lower end to an adjustable carriage,G, sleeved longi tudinally on the laterally-adjustable plate G ingrooves, and provided at its upper end with the handle G Theoscillations of the lever G are in a line at right angles with the innerend of the tub F, and the cutting'knives, here inafter named, are placedon that face of the lever G nextto the adjacent end of the tub F. Suchcutting-knives are three in number, are seated in the lever G, in anysuitable mode (preferably by means of a set-screw, 1)) adjust-ably, withtheir cutting-edges toward such tub. 0f such knives, the central one, H,is termed a leveler, and pares the upper ends of the staves to a uniformlength. The inside knife, I, is termed the inside rowel, and itsfunction is to pare or chamfer the inner edge of the upper ends of thestaves to a uniform surface. The outside knife, K, is termed theoutside-rim rowel, and is intended to smoothand reduce to a uniformitythe outside of the upper end of the tub F, so as to permit the passageof an outwardly-fitting lid. This threefold cutting process is conductedin rapid succession, the knives H I K being placed in the proper mutualrelation therefor, and held and guided by means of the lever G, throughthe medium of the handle G By means of slots t in the frame A, parallelwith the shaft B, and longitudinal slots sin the seat G, and suitableset-screws, a, projected from below, the plate G, and thereby the leverG, is adjusted so as to bring its knives in suitable relation to tubs ofdifferent sizes. The chuck E employed corresponds with the size of thetub being operated on.

M is a hand-lever pivoted near its lower end, and placed in suchrelation to the lower or outer end of the tub F, when the latter is inposition for being acted upon, that the knives of such lever M,hereinafter described, may respectively come in contact with the properportions of such tub.

The knives set on the inner face of the lever M are three in number, asfollows: Nis a leveler, whose function it is to reduce the lower end ofthe staves forming the tub F to a uniform length, finish oft the sameand prepare for the tub-bottom. O is an inside howel, designed tochamfer the inside of the lower edge of the tub, and reduce the same toa smooth condition and true circle. P is a croze located at such pointon the lever l\I and in relation to the inner circumference of the tub,as to form the annular recess on the lnsicle of the tub, to receive andsupport the bottom of the tub.

All of the knives N O l? are set adjustahly 'in the inner face of thelever M, and, like the knives in the lever G, actin rapid succession,being held to their work and guided and controlled by the operatorgrasping the upper end of the lever M.

The part B, to which the lower end of the lever M is pivoted, is sleevedon the transverse rod S to permit of lateral adjustment of such lever;and the supports S, which hold the rod S, are adjustably attached to thefloor in slots which run perpendicularly to the rod S, whereby the leverM may be adjusted to suit tubs varying both in length anddiameter.

T is a fixed rest to support the lever M when the latter 'is moved asideto permit a change of tubs. The levers G and M can be used at the sametime or successively.

The advantage of ourmachineisin the rapid progress of the work, itsthoroughness and correctness.

What we claim as our invention, and desire to secure by Letters Patentof the United States, is

1. The combination of the shaft B, provided.

with the chuck E, the lever G, provided with the handle G and with theknives H I K, and the plate G, such plate being adj ustably seated onthe frame A, and the lever G adjustably pivoted at its lower end to theplate G, perpendicular to the line of such first adjustment, whereby theattached end of such le'ver may 'be shifted in i'nvo directions, so asto adapt said knives to tubs of variant: diameters and lengths,substantially as shown, and for the purpose described.

2. The combination of the shaft B, provided with the chuck E, the leverM, provided with the knives N O P, the rod S, supports S, and

the part B, the lever M being pivoted at its

